Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Quando é a data agendada para a fazenda ter 17 turbinas?
 ###Tabelas: CREATE TABLE professional_league_1951–present (professional_league_1951–present_id AUTO_INCREMENT PRIMARY KEY, Season INT, Champion VARCHAR, Count INT, Runners-up VARCHAR, Third place VARCHAR, Top scorer VARCHAR, Top scorers club VARCHAR, Goals VARCHAR) CREATE TABLE development_regions (development_regions_id AUTO_INCREMENT PRIMARY KEY, County VARCHAR, Exports (US$ mil) VARCHAR, Percent of total exports VARCHAR, Imports (US$ mil) VARCHAR, Percent of total imports VARCHAR) CREATE TABLE winners (winners_id AUTO_INCREMENT PRIMARY KEY, Event VARCHAR, Date VARCHAR, Location VARCHAR, Winning skip VARCHAR, Runner-up skip VARCHAR) CREATE TABLE proposed_or_under_construction (proposed_or_under_construction_id AUTO_INCREMENT PRIMARY KEY, Wind Farm VARCHAR, Scheduled VARCHAR, Capacity (MW) INT, Turbines INT, Type VARCHAR, Location VARCHAR) CREATE TABLE anime (anime_id AUTO_INCREMENT PRIMARY KEY, Series VARCHAR, Title VARCHAR, Broadcasts (TV) 1 INT, Episodes (TV+extra) 2 VARCHAR, Directors VARCHAR, Aired in Japan 3 VARCHAR, US Release Date VARCHAR)  
SELECT Scheduled FROM proposed_or_under_construction WHERE Turbines = 17